Cyclodextrin mediated phase transfer in water of organic capped US nanocrystals

被引：11
作者：
Depalo, N
Comparelli, R
Curri, ML
Striccoli, M
Agostiano, A
机构：
[1] CNR, IPCF, Sez Bari, I-70126 Bari, Italy
[2] Univ Bari, Dipartmento Chim, I-70126 Bari, Italy
来源：
SYNTHETIC METALS | 2005年 / 148卷 / 01期
关键词：
colloidal US nanocrystals; cyclodextrins; spectroscopical characterization; host-guest chemistry; polyelectrolytes;
D O I：
10.1016/j.synthmet.2004.09.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work the phase transfer of blue emitting US nanocrystals (NCs) from organic solvent to water is reported. Oleic acid capped CdS NCs were synthesized in non-coordinating solvents and effectively transferred from organic phase, i.e. hexane, in aqueous solution. The transfer was mediated by the formation of an inclusion complex between NC surfactant and alpha-cyclodextrin (alphaCD). Effect of alphaCD concentration and NC size on the phase transfer process was evaluated. No NC aggregation in the phase transfer and long stability in time were observed. The spectroscopic properties of the resulting solution were investigated. Finally a supramolecular hierarchical multilayer system with high level of structural complexity was fabricated by using a layer-by-layer assembling procedure of CdS-NC/alphaCD inclusion complex in multilayered films. (C) 2004 Elsevier B.V. All rights reserved.
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收藏
页码：43 / 46
页数：4
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